Shoe-sole-cutting machine.



T. H. GRAYDON. 'SHQE SULE CUTTING MACHINE. 1 APPLICATION FILED IIAY 4. mg;

Patented Aug. 151917.

2' SHEETS-SHEET I.

SHOE'SOLE GUTTING MACHINE.

Arrucmon FILED IIAY 4. me.

Patented Aug. 14, 1917.

mourns neimrnomor chromium, onto;

res les T050) whom it may concern:

.Be it known that I, THOMAS H. GRAYDON, a citizen of-the United States, and a resident of the city of Cincinnati, inthe countyof Hamilton and State-of Ohio, have invented certain new ,andanuseful Improvements 1n rShoe-Sole Cutting Machines, of which the heels of but half the thickness.

following is a full, clear, and exact descrip tion, reference being bad to the accompanying drawings, forming part of this specificatiOIL i t i 1,

My invention relates tomachines for cutting shoevsoles outof pieces of leather so as a to produce two soles out of one thickness of leather, with the toe portions of the original thickness and the shanks or the shanks'and The object of so cutting the soles is thatin-each pair of solesthere 1S saved that amount of leather necessary otherwise to form ashank and heel. v

It is not necessary to provide for a heel portion at all on the outer sole of a shoe as,

in the cheaper shoes, a' piece of, inferior leatherlmay be: secured to the shank portion whichwill serve asthe basis for the heel of theshoe. It isthe object to use with this machine blanks of leather cut out in. the

pro or :form to be sliced up into two soles theshanks and heels of one half thick- In the adaptation of my invention to be hereinafter described, the holders for the i 901i cutting knife.

"seat on the table of the cutting machlne. lnthedrawings, the description of which follows, the traveling or cutting knife and shoe sole blank are not made movable except to accommodate the "insertion of the work, andrthe device is intended tovbe employed with any desired form of travelin slicing The parts descri ,d then I .itsvtraveling {mechanism is only shown in, a

diagrammatic way, as it is obviouslywithin the'province of'the mechanic skilled in; the

art of movable cutting knives to employ imechanisun for operating a beveled or 10-, "tar-y slicing knife so that it will operate Ivertically and can be moved in a suitable slot to cut or slice apartthe blank'of leather.

As will be obvious, the table portion could just aswell be mademovableand the knife "left stationary, by moving the table instead either knifein a 1 like path, but no such structure is described, althoughit would come within the scope of 'my 1nvention, bei eause it is'preferred and 1s less nexpensive,

D STATES rATE oF snon-sonn-cnr'rmc M ler-mm.

Specification of Letters Patent;

Fig. 2 is a, a front elevation thereof.

modating different; sizes of Y bla' have the common portionsof; the'blank to i I to have the knifetravel and the device as described to hold the ,work stationary,

The object above,- noted I accomp h 6 more specifically that certain construction andflarrangement of parts to be hereinafter pointed out and claimed; In the drawings,

Fi ure 1s a top plan viewlot the Fig, 3 is a right sid a as themes 7 I F1g. 4 is a top planviewof thevblocks fork i i i holdingthe blank to be, out. f t

Fig. 5' is a diagrammatioview i j t 170 It will, be understo d that .the parts to cutting knife;

be described are to be mounted on the table 1 of a rotary cutter having a revolving knife 2 which travels in a suitable slotin the table.

Over this slot,-,held; aswill be descrihed,-am a pair of bl0cks-3 and 4, Theblock Liste v be movablelaterally and the block Betationary as far as lateral movementjis eoncorned. Both blocks might be ,sozmovable, s but it has been foundwthat themovem-ent of a a one of themis easier to control, and deter 1' mine.

tion .of the blank that is to be common to both completed soles is to ,lie between the a faces 5 and 6 of the two blocks respectively, and the toe portion of one sole extendofl r, at an angle in the slots 7 'of the blockB, and:

the other toe-pOI'tiOn into the slot 8 in the block 4.- Means 'Willbedescribjed whereby;

the blocks are to be slightly separated to allowinsertion of thej work, and for closing them together, over the soleleather blank so asto hold it ce'ntered over the slot in the table; When ,,the;jknife "passes, along in the slot ig.- 4) ,the leather will be cut-inhalf along the portionslying betweenthe vtwo bl ocks,;and' this cut; will result in two soles, onehaving the shank and heelunfinishe'don both sides and the other ,havingbutyone; flesh side. The result of the "-cutwill natl'lrally depend upon the-shape of 'theblank'.

. "and as abovestatedyone of the blocks is-mov- ,106 r i I able relative to the other,thereIb;flaccom-.

sliced of varying length dependent uponthe sizeof the sole to be used The :bl'ocks face each Otherover .inthe cutter table, and are adapted to hold the sole leather blank to be cutgj.Thepor- Patented An 'g. 14,1917, 1 a I .v Application filed Hay4, 1916. Serial No. 95,344. a

.jpwhich,

.v ,---1 1o x The fixed block. 3 is heldslidably onqthe upper surface of the table by means qojf pins 9, 9, which are surrounded by springs 10, 10. The pins enter suitable holes in the block, and are slidably mounted in a plate 11 which is secured to the top" of the table. The length of pin extending in from the plate 11 is controlled by nuts 12 on the outer end of the pins where they protrude from the plate.

The result of this mounting is that theblock is resiliently slidable in one direction on the table, but is not movable laterally. This lateral movement is also prevented by side plates to be hereinafterdescribed.

The other block (4) is mounted on like pins 9, held by a plate 13. This plate has slots 14, through which pass the securing bolts 15 that hold it to the table. As a result, the position of the plate 13 may be controlled by the loosening of the bolts so as to change the relative position of the two holding block's. So as to allow this lateral movement of the block 4, the side, plates above referred to are cut away as will be described.

The balance of the mechanism deals with the means for moving the two blocks apart for allowing insertion of the work. For

this purpose two side plates 16, 16 are provided, said plates abutting against the block 3 and cut away adjacent the block 4 for the purpose above noted.

Mounted in a suitable boss 17 in the side plates are two shafts 18, 18, which have at the right hand end intermeshing gears 19, 19. The one shaft 18 extends through the boss and has mounted on its end the operating handle 20. The handle has a finger piece or plunger 21 that seats at one end of the movement of the handle in a socket 22 in the right hand side plate.

Fixedly secured to the shafts 18, 18, at each end are four arms 23, which are adapted to spread apart when the two shafts are vice is adaptable to the adjustment 0 angling slots rocked. These arms support links 24, which have ins 25 riding in slots 26 in the arms. The links have slots 27 at their other ends, which slots engage suitable pins extending laterally from the two blocks.

For the adjustable block the pins are long as shown at 28, so that the said operatinfg dethe block in a lateral direction. For the nonadjustable block the pins are short, as shown at 29. Resting on the top of the two blocks is the top late 30, which is reinforced by ribs 31, an is secured in some suitable manner to the side plates or standards 16. This top plate is cut away along the lines 32, 32,

at each side of the meeting line of the blocks, said line of cut slanting so as to clear the in the blocks also.

As thus described the operation of the device is as follows :The movement of the handle vof the shifting mechanism will ting rating them ia small distance for the insertion of a blank of leather. The blank being already cut to the proper size is inserted between the blocks, with the toe portions of the blank in the two angling slots in the blocks. The adjustable block is then moved along until the portion of the block that is to be sliced is alone located between the blocks and the balance of the blank located in the angling slots.

During this adjustment the blocks are held apart by the finger hold plunger 21 on the handle dropping into the socket in the side plate or standard. When 'the parts are adjusted, the handle is released by drawing out the plunger and is brought down to draw the blocks together over the piece of leather. The blocks will also come together of their own accord because of the springs on thepins that are used infguiding and mounting the blocks, and these springs serve to hold the blocks resiliently together over eled down from the original thickness and v with the main body of the said out portions of just one half the thickness of the portions of the soles that were held in theangling slots in the blocks.

I do not wish to be limited inthe claims that follow to the exact structure described in the foregoing specification as the descriptionrefers but to the preferred form of my invention; on the contrary, I wish to be entitled to the full scope of the doctrine of equivalents in the construction of my claims. Also I do not wish to be limited in my claims because of my failure at this time to appreciate the full usefulness of my invention, as I intend it to be used in the future in any manner that may turn out to be economical and convenient, and that mere mechanical changes necessary to adapt it to future uses be fully included in the scope of my invention.

Having thus described my invention, what I claim as'new and desire to secure by Letters Patent, is: i r

1. In a machine of the character described, a'knife and a holder for a portion of leather, said knife and holder being relatively movable, said holder comprising abutmembers having means thereon for holdin certain parts of the leather away from t e abutting faces of the said members, and means whereby the relative movement brings the knife between the said abutting faces. 7

2. Ina machine of the character described, a knife and a holder for a portion of leather, said knife andholder being. relatively movable, said holder comprising two blocks having their faces abutting each other and anglin scribed, a knife and a holder for a portion of leather, said knife and holder being rela- 1 tively movable, said holder comprising abutholdin from t e abutting faces of the said members,

ting members having means thereon for certain parts of the leather away andmeans whereby the relative movement ibrings the knife between the said abutting faces, said: members being resiliently held againsteach other, for the purpose described.

4. Ina machine of the character described, a knife and a holder for a portion of leather, said knife and holder being rela- \tively movable, said holder comprising abutting members having means thereon for holding certain parts ,ofathe leather away from the abutting faces of the saidmembers, and means whereby the" relative movement brings the knife between the said abutting faces, said members being adjustable with relation to each other; to bring the said holding away means on the members into various positions with relation to each other.

51111 a machine of the character de-[ scribed, a knife and a holder for a portion of leather, said knife and holder being rela-' tively movable, said holder comprising abutting members having means thereon for holding certain parts of'the-leather away from the abuttin faces of the said members, means whereby the relative movement brings the knife between the said abutting faces,

and means vfor separating the said members forthe insertion of work. v I r v 6. In combination with a cutting machine having a movable knife and a table forsupporting the same, a air of holding members l mounted on said ta le, said members'abut ting each other over theline of path ofthe knife, and means in each"memb.er tohold away from the said line,portionsof'leather which are not to be sliced by the knife.

THOMAS. GRAYDON. I

Ooplu at this patent my beobtalned tor five cent: each, by addressing the'Gomm1u1oner of Patent,

, a Washington, D. 0." i 

